body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
}

.container{
  display: flex;
  .nav-left{
    width: 15%;
    min-width: 180px;
    // height: calc(~"100vh - 250px");
    height: 100vh;
    background-color: #001529;
  }
  .main{
    flex: 1;
    height: 100vh;
    background-color: #f1f1f1;
    .content{
      position: relative;
      padding: 20px;
    }
  }
}